A novel BECCS power cycle using CO2 exhaust gas recycling to enhance biomass gasification

Greencorn, M. J., Jackson, S. D. , Hargreaves, J. S.J. , Datta, S. and Paul, M. C. (2020) A novel BECCS power cycle using CO2 exhaust gas recycling to enhance biomass gasification. In: 11th International Conference on Applied Energy (ICAE 2019), Västerås, Sweden, 12-15 August 2019, Paper 659.

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Although not yet a mature technology, biomass energy with carbon capture and storage (BECCS) is expected to be the leading negative emissions technology deployed over the 21st century to reduce greenhouse gas (GHG) emissions. In this paper, a novel BECCS cycle using exhaust gas recycling (EGR)-enhanced biomass gasification is described and analysed. This cycle combines an atmospheric gasifier and an Otto cycle engine operating under an oxy-gasification/combustion CCS scheme. Exhaust gasses from the Otto cycle, rich in CO2 and at high temperature, are recycled to the gasifier to enhance syngas production. Analysis of a representative numerical model illustrates how EGR creates higher system efficiency and lower specific CO2 emissions while allowing for lower gasifier O2 equivalence ratios (E/R). Compared to a similar power cycle without EGR, the proposed cycle improved system efficiency from 21.7% to 28.8% while reducing specific CO2 emissions from the cycle by 25%.

Item Type:Conference Proceedings
Additional Information:Support for this research provided by the University of Glasgow through the Lord Kelvin – Adam Smith Doctoral Scholarship. M.C.P. acknowledges his RAEng/The Leverhulme Trust Senior Research Fellowship support (LTSRF1718\14\45) from the Royal Academy of Engineering.
Glasgow Author(s) Enlighten ID:Paul, Professor Manosh and Jackson, Professor David and Hargreaves, Professor Justin and Datta, Souvik
Authors: Greencorn, M. J., Jackson, S. D., Hargreaves, J. S.J., Datta, S., and Paul, M. C.
College/School:College of Science and Engineering > School of Chemistry
College of Science and Engineering > School of Engineering > Systems Power and Energy
Copyright Holders:Copyright © 2019 ICAE
First Published:First published in Volume 3: Proceedings of 11th International Conference on Applied Energy, Part 2, Sweden, 2019, Paper 659

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
3017840Next Generation Advanced Gasification TechnologyManosh PaulRoyal Academy of Engineering (RAE)LTSRF1718\14\45ENG - Systems Power & Energy